Charlie discovered that if we invest in companies that have great economics working in their favor, at a reasonable price, we can bring the number of companies we own down to ten or fewer and still be protected against an unexpected business failure, and have good growth of our portfolio over a ten- to twenty-year period. As the saying goes, too much diversification, and we end up with a zoo. It’s much easier to keep a sharp eye on our basket if there are only ten eggs in it.

